On Wed, 29 Aug 2012 18:10:40 +0100, James Brown wrote:

Looking at my weather station charts for today:

http://www.meteosat.co.uk/Porthcawl/trends.htm

There was almost 2 mb sudden drop just before 0800 and then a few hours
later around 1300 a sudden 1mb rise. Not seen that before here.

Is the pressure transducer indoors? There is a change in wind speed at 0800
and really big chnage at 1300. I've seen similar pressure "variations" here
when the wind changes speed an sometimes direction.

--
Cheers Dave.
Nr Garrigill, Cumbria. 421m ASL.